Spring-rigging for cars.



No'. 673 6|4. 90 w. CASE. Patented May 7, I I

SPRING RIGGING FOR GARS,

(Appxieasion fue@ mar, sa, 1897.)

No Model.)

2 Sheeis-Sheet l.

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i. P tenian ma 7 Ism. nu. 673,6l4 w CASL a y SPRING RIGGING FOR CARS,

(Application led Mar. 26, 1897.)

2 Sheets-Shed 2.

fNu Model.)

INVEN'TQRv Wazaa@ me Nonkrs Pc-rzns co, morouwa. wunmmcn, n cv.

'UNITED STATES 'PATENT OFFICE.

WILLIAM CASE, OE CHICAGO, ILLINOIS, ASSIGNOR TO THE NATIONAL MAL- LEABLE CASTINGS COMPANY, OF CLEVELAND, OHIO.

SPRING-'RIGGING FOR CARS.

SPECIFICATION formingpart of Letters Patent No. 673,614, dated May '7, 1901.

Application filed March 26,1897.

TO 'L1/ZZ whom, t may concern:

Beit known that I, WILLIAM CASE, of Chicago, in the county of Cook and State of Illi- Vnois,have invented a new and useful Improvement in Spring-Riggings for Cars, of which the following is a full, clear, and exact description, reference being had to the accom# panying drawings, forming part of this specivfication, in which- Figure 1 is a plan view, partly in section, of the spring-rigging of a car-platform embodying my invention. Fig. 2 is a longitudinal section on the line II II of Fig. 1. Fig. r3 is a cross-section on the line III III of Fig. 2.

t5 Fig. 4 is a modification of the spring-rigging,

and Fig. 5 is another modification thereof.

In the drawings, 2 represents the end sill yof the car-body, 3 3 the draft-timbers, and 4 4 the draft-irons between which the draft-rigging is set.

5 5 are the longitudinal timbers of the platform, and 6 is the platform end sill.

7 is the draft-rigging, and 8 is the draw-bar, whose rear end is connected pivotally therewith by a pin 9. The specific construction of the draft-rigging, although I believe it to be original with me, is not claimed herein, since I have made it the subject of another copending application for Letters Patent, Serial No. 612,194, filed on November 16, 1896.

10 is a buffer-plate set in front ofthe platform-sill 6 and having three stems 11, 12, and 11', p'ivotally connected to it by pins 13 and extending rearwardly through the sill 6, at the back of which they are provided with spring-riggings, now to be described. Each of the outer stems 11 has a spring-rigging B, having two springs 14 15 arranged in tandem, the auxiliary parts being so constructed that on backward motion of the stem both of its springs 14 15 are compressed, whereas outward motion of the stem will only compress one of its springsfor example, the spring 14. The middle stem 12 is also backed by two springs 164and 17, which encircle the stem 12, and the spring 17 is contained in a housing or case 18, formed at the end of a push-bar 19, which extends rearwardly under the end sill 2 and in contact with a guide 20 thereon 5o and is pivotally connected to the rear end of the draw-bar at or by a pin 9, the purpose of Serial No. 629,324. (No model.)

pivoting it at this point being to give to the draw-barfull and unimpeded lateral swing on said pin. The stem 12 passes freely through the opposite ends of the housing 18 and has 55 an encircling follower 21, between which and the end of the housing the spring 17 is interposed. The other spring 16 bears at one end against a shoulder 22 on the stem and at the other end against the forward side 23 of the 6o housing.

When the car is coupled in a train, if the draw-bar 8 should be drawn forward it will move forward the push-bar, and the latter bearing against the springs 16 and 17 at the 65 points 18 and 23 will compress both of them and will push forward the stem 12. In like manner when the stem 12 is forced back beyond its normal position by pressure on the buffer-plate 10 it will compress both springs 7o acting thereon at the shoulder 22 and follower 21.

Each of the spring-riggings VB comprises a housing or spring-carrier 24, fixed to and sup` ported by the end sill of the car-body, so that its weight shall be upheld by the car-body and not by the platform, as in like devices heretofore employed. Both springs 14 and 15 encircle the stem 11 or 11 and are contained within the housing. A follower 25 on the 8o stem bears against the forward end of the spring 14, while the other end of the stem bears against a follower 26 at the end of or xed to the end of a longitudinally-movable box or cylinder 27, which extends outside the spring 15 and terminates in a follower 28, against which the rear end of the spring bears and which in turn 'is seated against a stop or abutment 29 on the housing. A key or other stop 30 on the stem bears against the rear 9o end of the box 27, adapting the latter to Abe moved forward when the stem is drawn forward. At the end of the spring 15 is a follower 31, which bears against a shoulder on the stem. If the stem be pushed back, it will move with it the followers 25 and 3l and will thus compress both of the springs 14 and 15, the follower 26 acting as a stationary stop or abutment for the spring 14 and the parts 28 and 29 acting similarly as the stop or aloutloo ment for the other spring. If, however, the stem be drawn forward, it will move with it to produce the result which I desiref-namely, 'compression of both of the springs'in bnfng the box 27and the follower 26 and will thus compress thespring 14 against the follower 25, but the other spring 15 will not be compressed. This construction of the spring mechanism maybe modified in various ways and the compression of only one spring when the buer-platform is extended.

The operation of the device is as follows:

I/Vhen the car is coupled in a train and when" the train is in' forward motion, the draft on 16. Both of theseisprings will'thus be com# thedraw-bar 8 will pull forward the draftand -siilch forward motio'nwill be communipressed.y 'Their strength isl sochsen that together they are sufficient to move the buffer'plate 10 outwardly against the compression of the two springs 14 14, which,l as above' explained,act when the stems'll 11 a'removed. outwardly, while the other springs15l5`do` j not lthen act.

with thebuffer-plate of the adjacent can is.

Contact of the `b'ufferplate thus maintained,and the'si nfgle pair ofispringsv 4and balance the operation ofthe 'two pairs of on themiddle stem is enabledto rcounteract springs at its side. Il'henthe train' is going' around a curve, the deflectioniof the c'ars from': a straight line will apply an unequal pressure to the ends of the plate and will urge the 'stemat one side inwardly against the pressure'j of both its spi-"ings,fwhile the `outward motion of the other side stein isf resisted by compression of the 'spring14 only.

The advantages of my inventionlwill be apparentgto those skilled in the art.

' 1 nations and constructions.'

First, VA bufng stem backed by spring mechanism comprising two springs-,both of.'

which'are compressed ini buftingand only one of which is compressed i'iroutward motion." This part oi" my invention is not'limitedito its ,if

' application to thelbuffer-plateof passenger.-

of freight-cars, dto.

' Second. A bufngplate having at each end;

and whether a: 1h iddle stem'l beieinployedl or The' advantage lof this during the rocking mol tion of the.buffng-plate'when oneen'dilnoyes' inward and the other-.end moves'o'utward is' ve'y material. f1 This part of Ymy .invention may be appliediwit'h advantage Ain construc-A tio'ns `in which two side vspring-riggiugsare employedwithout any middle spring-rigging;

. Third. YA bufler-plate backed by three sets of tandem springs, two at the' ends and one in the middle.

Fourth. The three sets of spring-rigging, the end spring-riggings being adapted to act singly on their outwardmotion andto afford adoubi'compressioh in buffing,'wl1ile the 'middlesp'ringrigging actsldoubly in its outward motion. The advantage of this is that the mindle ,spring mechanism will counter- `lialan`c the operation of the other two and the device is rendered much more effective thanheretofore, This construction also enables ine 'to use'lightesprings:

' Fifth; EThe push-bar having at its end and rigid therewith a spring-carrying box or cyl inder, the advantage of` `which is that it af- Vyfords.rig'fidityand strength.- Y' rigging and extend 'the draw-bar somewhat,

Sixth. The push-barwhich has a hearing f agaius't'runder the en d sillof the car to guide its "operationand to strengthenthe con struc- Within the scope of the invention as delined'in` thefollowing: claims many changes in the form and construction Aof the various "parts nay'bejmad'e by the-.skilledinuechanicl Thus in Figl I show a modified `construction of spring 'mechanism for the two sidespring- 'riggings to be y"'u'sed"in combination with the 2middle'',springrigg'ing,and adapted to afford [compression offonlyonespring in either motion 'of' thebnfing-stem wrhether 'forward or back.; This construction, intended to'be coveredby'my broad claimsMwillenable themidlespring-rigging `to` counterbalance th'e side spring-riggings in the outward motion 'or extensionofthe partsi 4In this figure the housing B hasninternal' partitions'V bbvand two springs 14":.a'rld-15 ,thespringllbeing situatebetween afol'lowe'r at theend vof the housing. and thepartition and thespring l5' beving interposedl between Ythe partitions b ZJ. Im portant i results are secured bythe following parts,1 among othersgof my' device, each of. which is" capable of 'independent use in other'comb" lpressed;,whilethe'spring-142m idlefj I prefe'r inthis construction tomake the7 spring 1.4 stouter than ythe,spring15, and thus to get a strongerl resistance in bufling than in extension. Y

rigging's `covered by my "broad,claims,fand I intend also 'to: claimg the sameV specifically.

This'modiflcation. isA designed toadord independent compression ofboth springs inbuling;and conjoint compressionithereofin extension vof fthe stentiV Here thefhousing B2 has internalpartitionsor fixed stopsb2 b3 and twosprings 14h and 15,121? The'fstem 11b has a Astoporslou'l'de'r c, agai'nstzwhichishitted a ffollowerclg` whichg andalso thespring l5b are rof suitable; dimensions to pass Ythrough the ho'lein the partition bggThijs follower bears against the'inner, end ofthespring 15b, and on kthe other side ofthe Vpartition,and bear- ICO IIO

In Fig. 5 I show anothertmodied construe# tionofspring mechanism for thesid'e springi l cars, but may be applied to thesingleabuffers v f n, i V:

ing against the spring 145 is a follower e, which is of such dimension that it will not pass through said hole. The construction otherwise may be the same as in Fig. 4. If now an inward motion, as in bufng, be imparted to the stem 11b, it will compress both springs, the spring 141 being stopped by the follower e bearing against the partition b2 land. the spring 15b being stopped bythe partition b3. On outward motion of the stem both springs will be compressed together against the forward end of the housing, for the follower d will pass through the partition and will thus prevent independent cor'npression of the springs.

I claiml. Abufng-stem having two springs thereon, and followers on the stem adapted to press against both springs on inward motion of the stem, and to press against one spring on outward motion of the stem; substantially as described.

2. A bufng-plate having at each end a spring-rigging comprising two springs, and means adapted to compress both of said springs in buffing, and one only ofsaid springs when the plate is extended.

8. bufng plate having three sets of spring-rigging, one at the middle and one at each end, the end spring riggings having single springs acting in extension of the parts forward beyond their normal position, and the middle rigging having two springs both of which act in any extension of the parts forward beyond their normal position.

4. A buffmg plate having three sets of spring-rigging, one at the middle and one at each end, the end spring-riggings having tandem springs, both of which act in compression while only one acts in extension, and the middle spring-rigging having two springs which act in extension of the parts.

5. A buffer plate having two tandem springs at the middle and having tandem springs at each end, said end springs being constructed to afford greater resistance in compression than in extension and the middle springs being adapted to afford an extension of greater resistance than the combined resistance of the end springs.

6. A bufing plate having three sets of spring-rigging, one at the middle and one at each end, the end spring-riggings having single sprin gs acting in extension of the parts forward beyond their normal position, and the middle rigging having two springs both of which act in any extension of the parts forward beyond their normal position, and a connection such as a push-bar between the middle spring-rigging and the draw-bar of the car.

7. The combination with a draw-bar and buer mechanism, of a push-bar connected to the draw-bar at the rear end and extending forwardly and having rigidly carried thereon a spring-containing box or housing in advance of the end sill of the car; substantially as described.

8. The combination with a draw-bar and spring-rigging, of `a push-bar having pivotal connection at the rear end of the draw-bar, and' having a bearing at the end sill of the car.

9. The combination with a draw-bar, of a push-bar, and a guide on the end sill of the car-frame by which the push-bar is guided.

10. A springrigging comprising tandem springs, followers therefor, an intermediate fixed stop, one of the springs and its follower being of proper dimensions to pass by the fixed stop, and the other spring having a follower adapted to be stopped thereby; substantially as described.

l1. A spring rigging comprising tandem springs and followers and stops adapted to cause compression of one of the springs when the parts are moved in one direction, and conjoint compression thereof when they are moved in the opposite direction.

In testimony whereof I have hereunto set my hand.

WILLIAM CASE.

Witnesses:

S. E. ScHooLEY, F. R. ANGELI.. 

